Improvement in treadles for sewing-machines



H. 0. SMITH.

Improvement in Treadle for Sewing Machines.

No. 120,401. PatentedOct. 31,1871.

Unrrnn STATES PATENT OFFICE.

HENRY G. SMITH, OF CLEVELAND, OHIO.

IMPROVEMENT 1N TREADLES FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 120,401, dated October31, 1871.

To all whom it may concern:

Be it known that l, HENRY 0. SMITH, of Cleveland, in the county ofOuyahoga and State of Ohio, have invented a new and ImprovedSewing-Machine Treadle, of which the following is a specification:

The nature of this invention relates to a combination and arrangement ofa bent oscillating lever situated between the foot-treadles andsupported by a standard, and is connected with each of the ioot-treadlesso that in the alternate motion the one treadle throws up the other.

In the drawing, Figure 1 is a front view of a sewing-machine tablehaving my treadle attached. Fig. 2 is an end View of the table with legremoved. Fig. 3 is a top or plan View of my improved treadle. Fig. at isa detached view of the oscillating lever and its supports.

A is a table top, depending from which is a bracket, B, which supportsthe shaft of the driving-w'l'ieel. To the rod, 0 stretched across thelower part of the table, I attach two levers, D D, pivoting them so thatthey may have motion, the right handone extending forward a littlebeyond the other, and having a socket, d, to which is attached a pitman,E, connecting it with the crank on the shaft above. Between the levers DD, and attached to the rod (3, are supports F F, the first one Fslipping into the second F, and are locked together by the rod 0. In thesupport F is arranged a bent oscillating lever, G, pivoted at g. Theforward end of the lever G is connected by a link, h, to the front endof the left-hand lever D, and the rear end is connected to a short armon the right-hand lever D by a link, i. The for Ward end of the lever Gis made longer than the rear end, so that the power shall be equal toresistance necessary to be overcome in the raising of the opposite leverD. By this construction there is equal compensation given to either ofthe treadles D D. A slot, j, is made in the levers D D, for the purposeof attaching slippers or foot-pads K K, which may be adjusted back andforth, as may be desired, by means of a setscrew on the under side. Thefoot-levers D D may be constructed in the form of the foot-pads K K andthe loose or adjustable ones dispensed with, if desired.

By this mode of constructing a sewing-machine treadle a very compact,easy-working, and steady reciprocating treadle is obtained. It is notliable to get out of order, and is situated where it will not interferewith any of the other machinery on the table.

I claim- The foot-levers D D, the supports F F, the 0scillating lever Gconnected by the links h and 11 to the levers D D, when the same areconstructed, arranged, and combined to operate substantially asdescribed and for the purpose set forth.

H. 0. SMITH.

Witnesses Gno. W. TIBBI'rs,

N. S. SWEET. (134)

